import axios, { AxiosInstance, AxiosError, AxiosRequestConfig, InternalAxiosRequestConfig, AxiosResponse } from "axios"
import { ElMessage } from "element-plus"
import { delNull } from "@/utils"

const config = {
  // 默认地址请求地址，可在 .env.** 文件中修改
  baseURL: "http://10.192.58.200:17000",
  // 跨域时候允许携带凭证
  withCredentials: true
}

class RequestHttp {
  service: AxiosInstance
  public constructor(config: AxiosRequestConfig) {
    this.service = axios.create(config)
    this.service.interceptors.request.use(
        (config) => {
          return config
        },
        (error: AxiosError) => {
          return Promise.reject(error)
        }
    )

    /**
     * @description 响应拦截器
     *  服务器换返回信息 -> [拦截统一处理] -> 客户端JS获取到信息
     */
    this.service.interceptors.response.use(
        (response: AxiosResponse) => {
          const { data } = response
          // 成功请求（在页面上除非特殊情况，否则不用处理失败逻辑）
          return data
        },
        async (error: AxiosError) => {
          // 请求超时 && 网络错误单独判断，没有 response
          if (error.message.indexOf("timeout") !== -1) ElMessage.error("请求超时！请您稍后重试")
          if (error.message.indexOf("Network Error") !== -1) ElMessage.error("网络错误！请您稍后重试")
          return Promise.reject(error)
        }
    )
  }

  /**
   * @description 常用请求方法封装
   */
  get<T>(url: string, params?: object, _object = {}): Promise<T> {
    delNull(params)
    return this.service.get(url, { params, ..._object })
  }
  post<T>(url: string, params?: object | string, _object = {}): Promise<T> {
    delNull(params)
    return this.service.post(url, params, _object)
  }
  put<T>(url: string, params?: object, _object = {}): Promise<T> {
    delNull(params)
    return this.service.put(url, params, _object)
  }
  delete<T>(url: string, params?: any, _object = {}): Promise<T> {
    delNull(params)
    return this.service.delete(url, { params, ..._object })
  }
  download(url: string, params?: object, _object = {}): Promise<BlobPart> {
    return this.service.post(url, params, { ..._object, responseType: "blob" })
  }
}

export default new RequestHttp(config)
